Yellowing is one of the biggest issues for transparent and light-colored phone cases.
For brands, it means complaints, returns, and damaged reputation.
From our production experience, solving this problem comes down to two key factors:
Material + Process
1. Anti-Yellow TPU Material
Standard TPU turns yellow quickly under UV, heat, and daily use.
Using high-grade anti-yellow TPU is the first step to slow down oxidation.
2. Surface Coating Protection
Adding a protective coating reduces exposure to UV and environmental factors, further delaying yellowing.
With this combination, our cases can pass 96-hour anti-yellow tests, and in real use, stay clear with only slight yellowing after 6+ months.
We’ve also solved yellowing issues in white PC IML cases, helping brands maintain a clean and premium look.
Dealing with Yellowing Issues?
If your transparent or light-colored phone cases are turning yellow too fast, we can help you improve both material selection and production process.
Please contact us for any such issues-Sendtin Case Manufecturer.
